2 0 2022 Detroit RT40.0-4 Front Differential for a Freightliner 122SD $2,366 USD (USED) Detroit DART-400-4N Ratio: 3.58 Side Gear Splines: 40 W/ Locker: NO Cast#: R7753511105 ConditionUsedFits To Make(s)FreightlinerFits To Model(s)122SDStock Number25747999 MLS Number13451488CategoryDifferentials, Front Last Updated9/18/2025 LocationWinimac, IN, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info